Ada.Text_IO.Put_Line("Hello World?");
1 1e10 16#FE12#E2 3.141_592 'y'
x+y x-y
x*y x/y
x**y
x(y)
x:=y
x=y x/= y
x<y x<=y x>y x>=y
x,y
x=>y
x..y
x<>y
